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All results from a given calculation for H2OH2O (water dimer)

using model chemistry: QCISD(T)/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD(T)/aug-cc-pVDZ
 hartrees
Energy at 0K-152.556711
Energy at 298.15K-152.559454
HF Energy-152.087371
Nuclear repulsion energy36.394885
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at QCISD(T)/aug-cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3873 3787        
2 A' 3779 3695        
3 A' 3710 3627        
4 A' 1657 1620        
5 A' 1638 1602        
6 A' 355 347        
7 A' 183 179        
8 A' 146 142        
9 A" 3893 3806        
10 A" 630 616        
11 A" 146 143        
12 A" 131 129        

Unscaled Zero Point Vibrational Energy (zpe) 10070.1 cm-1
Scaled (by 0.9778) Zero Point Vibrational Energy (zpe) 9846.5 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at QCISD(T)/aug-cc-pVDZ
ABC
7.10422 0.21205 0.21199

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.101 0.557 0.000
O2 0.000 1.525 0.000
O3 0.000 -1.400 0.000
H4 0.907 1.859 0.000
H5 -0.507 -1.708 0.763
H6 -0.507 -1.708 -0.763

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.97251.95971.53052.46662.4666
O20.97252.92440.96583.36003.3600
O31.95972.92443.38210.96730.9673
H41.53050.96583.38213.91183.9118
H52.46663.36000.96733.91181.5269
H62.46663.36000.96733.91181.5269

picture of water dimer state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 O2 H4 104.304 H1 O3 H5 110.186
H1 O3 H6 110.186 O2 H1 O3 171.126
H5 O3 H6 104.235
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability